70 
3Ieasiiremetits of Cairo-born Egyptians 
native migrates less than the group measured by the police. The natives of the 
former selection remaining in the town exceed by 10 per cent, those of the latter. 
This in all probability is to be explained by the fact that the census figures 
include children and boys under 20, up to which age there is less tendency to 
migration than afterwards. 
Table II gives a fairly exact idea of the daily occupation or social class to which 
the men measured belong. From this table we first remark that practically all 
men have their daily occupation, and that the greater part of them deal directly 
with the public. The proportion of these is 87 per cent. ; the ordinary native 
element is represented by 52 per cent. Vagabonds and men without distinct 
occupation come in with 6 per cent. 
As a result of the analysis of Tables I and II, we may come to the conclusion 
that the people dealt with in this paper are not necessarily of the poorest class of 
the total mass of the Cairo natives. And although they have undergone the 
police examination they are not necessarily of a selected class of natives, nor are 
they under special conditions of health. 
4. Age of the People. As we have already said, all youths under twenty years 
of age have been excluded. Most of the natives are ignorant of their right age and 
could easily deviate by ten or twenty years from the truth though with apparent 
good faith. The age was estimated by the police officer on duty. 
The percentage frequency of men per group of age is as follows: 
Census 
From 20 to 25 years ... 52 % 25 % 
„ 26 to 30 „ ... 28% 18% 
„ 31 to 40 „ ... 16% 26% 
„ 41 to 70 „ ... 4% 32% 
It will be seen that the above grouping eliminates the greater part of accidental 
errors due to personal equation of the observer. The figures given by the census 
are said to be very unreliable. 
TABLE III. 
Means, Standard-deviations and their respective Probable Errors. 
Character 
Length of Head, in mm. ... 
Breadth of Head, in nun. ... 
Left Middle Finger, in mm. 
Left Foot, in mm. ... 
Left Cubit, in mm. ... 
Stature, in cm. 
Cephalic Index, in % 
190-52 ±0-1 4 
144-45 J- 0-11 
1 14-09 ±0-15 
257-64±0-30 
457-51 ±0-52 
165-82±0-14 
75-82±0-07 
5- 90 ±0-10 
4- 67 ±0-08 
6- 14±0-10 
12-36±0-21 
21-21 ±0-36 
5- 93±0-10 
2-91±0-05 
* Sheppard's corrections have been applied. 
